Aerospike的bin内存管理--即列内存管理

1、内存申请函数调用

write_master->write_master_dim->write_master_bin_ops
->write_master_bin_ops_loop->as_bin_particle_alloc_from_client:
该函数对as_bin_s->particle进行申请内存，并将相关bin属性和值load到
申请的内存中。

2、内存释放函数调用

as_record_done->as_record_destroy->as_record_clean_bins
->as_record_clean_bins_from

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1. void as_record_clean_bins_from(as_storage_rd *rd, uint16_t from)
   
2. {
   
3. for (uint16_t i = from; i < rd->n_bins; i++) {
   
4. //对每个bin进行释放
   
5. as_bin *b = &rd->bins[i];
   
6. if (as_bin_inuse(b)) {//bin state有效
   
7. as_bin_particle_destroy(b, rd->ns->storage_data_in_memory);
   
8. as_bin_set_empty(b);//设置bin的状态AS_BIN_STATE_UNUSED
   
9. }
   
10. }
    
11. }
    
12. void as_bin_particle_destroy(as_bin *b, bool free_particle)
    
13. {
    
14. if (as_bin_is_embedded_particle(b)) {
    
15. b->particle = 0;//int、float类型没有申请空间，这里set 0即可
    
16. }
    
17. else if (b->particle) {
    
18. if (free_particle) {
    
19. particle_vtable[as_bin_get_particle_type(b)]->destructor_fn(b->particle);
    
20. }
    
21. //根据类型调用destructor函数，blob的调用blob_destruct，其实是cf_free(p)
    
22. //释放了空间，将其set 0
    
23. b->particle = 0;
    
24. }
    
25. }